docs: def command_line(self, input_path=None):
          '''Return a string to run OrfM with, assuming sequences are incoming on
          stdin and printed to stdout
          
          Parameters
          ----------
          input_path: str
              path to the input path, or None for STDIN being the input
          '''
          
          if self.min_orf_length:
              orfm_arg_l = " -m %d" % self.min_orf_length
          else:
              orfm_arg_l = ''
          
          if self.restrict_read_length:
              orfm_arg_l = " -l %d" % self.restrict_read_length
              
          cmd = 'orfm %s ' % orfm_arg_l
          if input_path:
              cmd += input_path
          logging.debug("OrfM command chunk: %s" % cmd)
          return cmd